This application note discusses using two displays running under DOS or when booting into an OS such as Windows or Linux. This document explains the issues with pre-OS dual displays and provides workarounds to address the situation using step-by-step examples. Dual display is allowed in DOS on Twin and Clone modes which are described in “Example: Enabling Clone Mode for Dual Display” and “Example: Enabling Twin Mode with LVDS and CRT”.

This application note discusses using two displays running under DOS or when booting into an OS such as Windows or Linux. This document explains the issues with pre-OS dual displays and provides workarounds to address the situation using step-by-step examples. Dual display is allowed in DOS on Twin and Clone modes which are described in “Example: Enabling Clone Mode for Dual Display” and “Example: Enabling Twin Mode with LVDS and CRT”.